BGS 70074 Cassette Lockring Socket with Center Pin

for installation and removal of cassette and disc brake lockrings | suitable for Shimano, SRAM, SUN TOUR, etc. the center pin protects the wrench from jamming socket length: 47 mm | diameter center pin: 5 mm | outside diameter: 23,5 mm | 12 teeth drive profile 1: internal sqaure | drive profile 1, inch: 1/2" | drive profile 1, metric: 12,5 mm | drive profile 2: external hexagon | drive profile size 2, metric: 21 mm surface finish: satin chrome plated | material: chrome molybdenum steel | width: 49 mm | height: 32 mm | depth: 140 mm, Weight: 0.18077905484 Pounds, Manufacturer: BGS