The outside measurements are 3/4" diameter and 3/4" long

created by Lowbrow back in 2010

The rubber is 1" in diameter

A set of Whitworth tools for your old british motorcycle (Triumph

This set of 8 wrenches includes 1/8 WW

Piston Ring Compressor for 650 c.c. Motorcycles - 70-75mm Triumph BSA Motorcycle Specific_Vintage Triumph The outside measurements are 3/4"These piston ring compressors are perfect for 650 c. c. motorcycles such as Triumphs and BSAs. The range on these is 70mm 75mm or 2. 76" 2. 96". This makes it so much easier to slip your cylinder barrel down over your new pistons and rings, and makes sure you don't break a ring and drop it down into your crankcase, giving you that sinking stomach feeling. Sold individually.