what is the thickness at the widest part, the block where the arms pivot?

I measured 0.620" diagonally across the corners where the O-ring spring is. I measured 1.720" diagonally across the corners of the rectangular block that mounts the pivot pins. The block measured 1.540" across the wide flat part and 0.880" across the short side where the pins reside.

How does it work with between the 2 different size rod

The hex barrel into which you thread your slide hammer is stepped. The first 1/2 of the hole is 3/4-16, then it step down to 5/8-18 for the second half.

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OEMTOOLS 27059 Pilot Bearing Puller Attachment, Pilot Bearing and Bushing Removal, Fits 5/8” x 18” or 3/4” x 16” Threaded Rods, Black

Product ID: 52968768

🔩Fits 5/8” x 18” or 3/4” x 16” threaded rods

🚗Precision puller for bearings & bushings on starters/generators

⚙️Heavy-duty steel construction for durability

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$68.05

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Description

🔧 Pull like a pro — never miss a beat in your repair game!

BUILT FOR PROS - Engineered for professional mechanics and heavy-duty automotive tasks
COMPACT DURABLE - Robust steel design in a compact form factor for easy handling and longevity
VERSATILE APPLICATION - Perfect for pulling bearings and bushings on starters and generators
EFFORTLESS BEARING EXTRACTION - Safely inserts behind pilot bearings for damage-free removal
UNIVERSAL THREAD COMPATIBILITY - Works seamlessly with common 5/8” x 18” & 3/4” x 16” slide hammer rods

The OEMTOOLS 27059 Pilot Bearing Puller Attachment is a precision-engineered steel tool designed for professional mechanics. Compatible with standard 5/8” x 18” and 3/4” x 16” threaded rods, it enables safe, damage-free removal of pilot bearings and bushings on starters and generators. Compact yet heavy-duty, it pairs with slide hammers to streamline tough automotive repairs.

Specifications

ASIN	B004FDGU20
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	129,808 in Automotive ( See Top 100 in Automotive ) 130 in Bearing Pullers
Colour	Black
Customer Reviews	4.5 4.5 out of 5 stars (842)
Date First Available	28 May 2014
Included Components	OEMTOOLS 27059 Pilot Bearing Puller Attachment
Item Package Quantity	1
Item Weight	386 g
Item model number	27059
Manufacturer	Great Neck Saw
Material	Steel
Number of Pieces	1
Part Number	27059
Product Dimensions	2.54 x 2.54 x 2.54 cm; 385.55 g
Size	One size
Special Features	1

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