Dimensions: 1-1/16'' overall length - 7/32'' x 13/16'' long tenon, with 7/32'' Long x 3/8" Wide (head). To install this axle peg, drill a 7/32" hole; then dip the axle peg tip (already through the wheel) into some glue (not the whole thing), taking care that no glue touches the wheel itself, so that the wheel can turn! This axle peg fits wood wheels with a 1/4" hole.