Description:Part # 386-3336 provides an Allen head (hex) driver for use as required across Cat product lines.Attributes:• Allen head hex driver• Hex Size: 3/4 in (19 mm)• Drive Size: 1/2 in (12.7 in)• Overall Length: 4-1/2 in (114.3 mm)Application:Consult your owner’s manual or contact your local Cat Dealer for more information.