Durable heat-treated 4140 Chromoly Steel. 4.5" long and compatible with 10mm or 14mm axle options thanks to the additional spacer supplied. Please note: The Primo Binary LT V2 4.5" Peg is sold individually. ###section### Product Specs LENGTH: 4.5" (114mm) DIAMETER: MATERIAL: Metal AXLE SIZE: 14mm with 3/8" adaptor PACK SIZE: 1 (Single) WEIGHT: