AP1 Axle Peg 7/32" dia. tenon x 1-1/16" tenon length. Wood axle peg for wheels with 1/4" hole. Axle peg length shown is the tenon length. The peg is snug in 7/32" hole. Typically you make the hole in toy body 7/32" and your wheel has 1/4" hole, allowing the axle to attach to toy and the wheel to spin freely.