--- product_id: 57868153 title: "Valve Cartridge Spline Gauge teeth Measuring size Finder Plumbers" brand: "tap magician" price: "$41.81" currency: USD in_stock: true reviews_count: 8 category: "Tap Magician" url: https://www.desertcart.us/products/57868153-valve-cartridge-spline-gauge-teeth-measuring-size-finder-plumbers store_origin: US region: United States of America --- # Credit card size portability Precision spline measurement Multi-spline compatibility Valve Cartridge Spline Gauge teeth Measuring size Finder Plumbers **Brand:** tap magician **Price:** $41.81 **Availability:** ✅ In Stock ## Summary > 🔧 Measure once, fix forever – the ultimate plumber’s secret weapon! ## Quick Answers - **What is this?** Valve Cartridge Spline Gauge teeth Measuring size Finder Plumbers by tap magician - **How much does it cost?** $41.81 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/57868153-valve-cartridge-spline-gauge-teeth-measuring-size-finder-plumbers) ## Best For - tap magician enthusiasts ## Why This Product - Trusted tap magician brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pocket-Sized Power Tool:** Compact credit card dimensions (15x2x20mm) fit effortlessly in your wallet or tool bag—always ready when you are. - • **Save Time, Avoid Mistakes:** No more guessing or counting teeth—quickly measure spline size to ensure you buy the perfect replacement part every time. - • **Precision at Your Fingertips:** Easily identify 18, 20, 24, and 28 spline sizes with exact diameter markings for flawless cartridge replacements. - • **Durable Stainless Steel Build:** Lightweight yet robust 20-gram stainless steel construction guarantees longevity and reliability on every job. - • **Trusted British Craftsmanship:** Designed and manufactured by Tap Magician, a leader with the world’s largest range of quarter and half-turn tap cartridges. ## Overview The Tap Magician Valve Cartridge Spline Gauge is a precision-engineered, credit card-sized stainless steel tool designed to quickly and accurately measure spline teeth and diameters (18, 20, 24, 28) for tap cartridge replacements. Trusted by professionals, it streamlines cartridge identification, saving time and preventing costly errors. ## Description Spline finder tool designed by Tap Magician. Identifies the most common spline / number of teeth and the diameter. Has 18, 20, 24, and 28 spline holes with different diameters. If you are changing cartridges regularly then this is a must have tool for your bag in order to identify the correct replacement part. Review: Spline Gauge - Really useful tool to measure the diameter and number of teeth on a tap cartridge. Saves time from trying to count the teeth and ensure you purchase the correct replacement part. Came with a wallet to store it in and a useful card showing you how to take the various measurements to make sure you get the right spare part. Good price and looks well made. Review: Measures splines - If you want to know what splines your tap spindle has, this works. If you want to know the time, it doesn't Does the job its designed to do well - what more do you want? ## Features - This is the Ultimate Plumbers tool and is a must for any Plumber or handyman that regularly replaces tap cartridges. - The Tap Magician Spline Gauge is very unique - It has been designed by us to be a really useful tool, it is credit card size, and each hole is marked by the number of teeth and the spline diameter. - Tap Magician are a Trusted British Company - We stock the worlds largest range of Quarter and Half turn tap cartridges ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B079VKTWX1 | | Best Sellers Rank | 80,894 in DIY & Tools ( See Top 100 in DIY & Tools ) 128 in Tap Cartridges | | Brand | Tap Magician | | Customer Reviews | 4.4 4.4 out of 5 stars (154) | | Item Dimensions | 15 x 2 x 20 millimetres | | Item Weight | 20 Grams | | Manufacturer | Tap Magician | | Material | Stainless Steel | ## Product Details - **Brand:** Tap Magician - **Item dimensions L x W x H:** 15 x 2 x 20 millimetres - **Item weight:** 20 Grams - **Manufacturer:** Tap Magician - **Material:** Stainless Steel ## Images ![Valve Cartridge Spline Gauge teeth Measuring size Finder Plumbers - Image 1](https://m.media-amazon.com/images/I/51nOApRyDGL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Spline Gauge *by M***R on 23 August 2024* Really useful tool to measure the diameter and number of teeth on a tap cartridge. Saves time from trying to count the teeth and ensure you purchase the correct replacement part. Came with a wallet to store it in and a useful card showing you how to take the various measurements to make sure you get the right spare part. Good price and looks well made. ### ⭐⭐⭐⭐⭐ Measures splines *by K***R on 6 January 2024* If you want to know what splines your tap spindle has, this works. If you want to know the time, it doesn't Does the job its designed to do well - what more do you want? ### ⭐⭐⭐⭐⭐ Tap Valve identifier *by G***Y on 16 June 2022* This is a handy piece of kit, i work as a handyman and im not a plumber but i come across many different types of ceramic disc valve types that need changing, many have had handles forced onto the splines but with this piece of kit i can identify the spline count before removing the valve and order a replacement or check stock before removing and going to a merchants. Saving me time and money. ## Frequently Bought Together - Tap Magician Valve Cartridge Spline Gauge teeth Measuring size Finder Plumbers - Spline Finder - Tap Valve Cartridge Gauge Teeth Measuring Size Finder for Plumbers - 15mm & 22mm Grakob RCT3 Plastic Plumb Thumbs Radiator Capping Tool --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/57868153-valve-cartridge-spline-gauge-teeth-measuring-size-finder-plumbers](https://www.desertcart.us/products/57868153-valve-cartridge-spline-gauge-teeth-measuring-size-finder-plumbers) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*