Moroso 68550 Moroso Valve Cover Hex Head Nuts - 1/2in Head - 3-7/8in - Steel - Chrome Plated - Set of 4Moroso 68550 Moroso Valve Cover Hex Head Nuts 1 2in Head 3 7 8in Steel Chrome Plated Set of 4 Valve Cover Hex Head Nuts, 1 2" hex head, 4 1 4" long, Chrome Plated Steel Use when space is critical or if the valve cover nuts must be snugged down tighter than wing nut finger tight Four per package with 1 4" 20 x 1 3 8" studs included Install and remove with half inch socket wrench with extension or a speed handle