Pneumatic Fitting Lockout Max Number of Padlocks 6 Padlock Shackle Max Dia 9/32 in Red Dimensions 2-7/8 in D x 2-7/8 in H Isoplast Polymers Fitting Type Male Valve Size 1/4 in 3/8 in 1/2 in Lockout Visibility No For Use With 1/4 3/8 and 1/2 in Male Fittin