--- product_id: 513003860 title: "RDS3218 20KG Dual Shaft U Mount RC Digital Servo - Waterproof Robot Arm Servo..." brand: "rcmall" price: "$44.25" currency: USD in_stock: true category: "R Cmall" url: https://www.desertcart.us/products/513003860-rds3218-20kg-dual-shaft-u-mount-rc-digital-servo-waterproof store_origin: US region: United States of America --- # IP66 waterproof rating Full metal gear with CNC aluminum shell 20KG high torque power RDS3218 20KG Dual Shaft U Mount RC Digital Servo - Waterproof Robot Arm Servo... **Brand:** rcmall **Price:** $44.25 **Availability:** ✅ In Stock ## Summary > ⚡ Power your RC world with precision and unstoppable torque! ## Quick Answers - **What is this?** RDS3218 20KG Dual Shaft U Mount RC Digital Servo - Waterproof Robot Arm Servo... by rcmall - **How much does it cost?** $44.25 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/513003860-rds3218-20kg-dual-shaft-u-mount-rc-digital-servo-waterproof) ## Best For - rcmall enthusiasts ## Why This Product - Trusted rcmall brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Weather Ready:** IP66 waterproof rating means your servo thrives rain or shine—never miss a beat outdoors. - • **Precision Engineering:** Full metal gear set paired with dual ball bearings ensures rock-solid durability and smooth operation. - • **Versatile Compatibility:** Perfectly tailored for 1/8 and 1/10 scale RC cars, crawlers, robots, and mechanical arms—upgrade your rig instantly. - • **Unmatched Torque & Speed:** 21.5kg/cm stall torque with lightning-fast 0.14sec/60° response—dominate every RC challenge. - • **Flexible Mounting Options:** Includes long and short U-shaped brackets for effortless 180° to 270° adjustable installation. ## Overview The RDS3218 Digital Servo delivers professional-grade 20KG dual-axis high torque with a rapid 0.14sec/60° movement speed. Built to endure with IP66 waterproofing and a full metal gear CNC aluminum shell, it offers flexible 180°-270° rotation and versatile mounting via included U brackets. Ideal for 1/8 and 1/10 scale RC cars, crawlers, robots, and more, this servo combines durability, precision, and power for high-performance remote control applications. ## Description desertcart.com: Rcmall RDS3218 Digital Servo, 20KG Dual-Axis High Torque, Waterproof IP66, Full Metal Gear with U Bracket, 180° Adjustable, for RC Cars, Crawler, Robot, 1/8 1/10 Scale Buggy (1PCS 270 Degree Servo) : Toys & Games ## Features - Package List : 1 x RDS3218 Digital Servo ; 1 X Long U Shape Bracket ; 1 X Short U Shape Bracket ; 1 X Screws Set - Professional-grade for DIY Baja Car 1/8 1/10 Scale Crawler truck, robot,boat,mechanical arms, climbing cars and remote control models. (270 Degree） - High-Performance Drivetrain：Dual motor 4WD system with hydraulic shock absorbers - Professional-Grade Torque & Speed 21.5kg/cm stall torque (6.8V) with 0.14sec/60° movement speed for high-performance robotics - IP66 waterproof rating + adjustable 270° rotation + included U bracket for flexible mounting - Premium Durability Package CNC aluminum shell + dual ball bearings + IP66 waterproofing with copper/aluminum gearset ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BP25DH7Z | | Batteries | Nonstandard Battery batteries required. | | Best Sellers Rank | #287,390 in Toys & Games ( See Top 100 in Toys & Games ) #587 in RC Servos | | Customer Reviews | 4.6 4.6 out of 5 stars (11) | | Item Weight | 3.34 ounces | | Item model number | RDS3218MG | | Manufacturer | Rcmall | | Manufacturer recommended age | 18 months and up | | Product Dimensions | 2.4 x 0.8 x 1.6 inches | ## Images ![RDS3218 20KG Dual Shaft U Mount RC Digital Servo - Waterproof Robot Arm Servo... - Image 1](https://m.media-amazon.com/images/I/511Chj4qI3L.jpg) ![RDS3218 20KG Dual Shaft U Mount RC Digital Servo - Waterproof Robot Arm Servo... - Image 2](https://m.media-amazon.com/images/I/61HxUn-cDmL.jpg) ![RDS3218 20KG Dual Shaft U Mount RC Digital Servo - Waterproof Robot Arm Servo... - Image 3](https://m.media-amazon.com/images/I/71PrcwrickL.jpg) ![RDS3218 20KG Dual Shaft U Mount RC Digital Servo - Waterproof Robot Arm Servo... - Image 4](https://m.media-amazon.com/images/I/71XYF050ayL.jpg) ![RDS3218 20KG Dual Shaft U Mount RC Digital Servo - Waterproof Robot Arm Servo... - Image 5](https://m.media-amazon.com/images/I/61ZrWJ3dw2L.jpg) ## Frequently Bought Together - RDS3218 20KG Dual Shaft U Mount RC Digital Servo - Waterproof Robot Arm Servo - High Torque Full Metal Gear Servo with U Mounting Bracket for DIY Baja Car 1/8 1/10 Scale Crawler (270 Degree - FLASH HOBBY Brushless Motor D3548 1100KV Outrunner Motor for Mini Multicopters RC Plane Helicopter Fixed-Wing Aircraft - Master Airscrew Performance 12x4.5 Multi-Rotor Series Propellers - Black, 2 pcs --- ## 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/513003860-rds3218-20kg-dual-shaft-u-mount-rc-digital-servo-waterproof](https://www.desertcart.us/products/513003860-rds3218-20kg-dual-shaft-u-mount-rc-digital-servo-waterproof) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-26*