Designed Function: These camper shell T-handle locks designed to well replace your no-working Truck Cap locks, we offer L&R pair lock set, also single left and single right by another choice option. This option is L&R pair, recommend for use on rear Topper doors with double T-Handles. Dimension： The truck cap lock rod is 1-11/16” length, install screw bolt 1/2” length, (locking cam not included), other details dimension and install opening size as image-3. Recommend check the size is fit your truck cap before purchase. Easy to Install：Base on the L/R label or lock/unlock by yourself test to identify L/R lock at first; 2nd insert the truck camper t-lock rod through the install hole, adjust the hole size if needed; 3rd security the install screws to ensure cap t-locks firmly fixed on the truck camper door, then install your old locking cam correctly and tighten the screws. Use/Note：Vertical=unlock; Horizontal=lock; Left truck T-lock=rotate counterclockwise 90 degree to lock on & reverse operation unlocking; Right truck T-lock=rotate clockwise 90 degree to lock on & reverse operation unlocking. Material/Package：The truck topper t-handle lock is made of Zinc die cast with black powder coating finish, ensure long lasting in outdoor environment. Package includes: 1* Left Cap T-lock, 1* Right Cap T-lock, 4*keys, 4*installing bolts. ST：Truck Cap Camper Shell T-handle Lock Latch Replacement Parts locking cam Truck Bed Topper Door Locking Kit Accessories Keys pickup rv trailer canopy Matching Set locks latches tailgate toper pop up t-lock rear doors with double T-Handles