●【SUPERIOR PERFORMANCE】The ladder lock 28-11 is easy to put old and rusty ladders back into working condition. ●【WHY CHOOSE US】Extension ladder lock kit,we have most of the component manufacturing process, and the quality is comparable to OEM or even better. We know what materials these accessories should be made of and bring out their best performance. ●【TOOLS REQUIRED】Rung Lock Kit ,installation requires 1 drill, 1 drill, a 3/16" diameter drill bit, a cold chisel, a hammer, a 3/16" diameter punch, two 716 wrenches, a 3/8" wrench, and a 5/16" wrench. ●【NOTE】Extension ladder accessories not all models of extension ladders are suitable, and some ladders may need to be re-drilled or followed the instructions. ●【RELATED SERVICES】If you have any questions or suggestions or dissatisfaction with the product, please feel free to contact us by email, we will reply you within 24 hours.