Rock Grip Climbing Hand Holds
Rock grips come in a set of 12. Plastic blow molded Rocks are molded from polyethylene with UV and cold weather protection. These come in 3 different shapes and are roughly 5 1/2" x 4 x x 2". There are two to different sizes of mounting holes. The attaching screws and bolts are included. Now smaller sized with the bolt holes that are 3/8" and 2" center to center. This product should last 2 years in harsh conditions and up to 5 years in optimal conditions. Some conditions may require replacement sooner.
Due to the thermo dynamics and lower heat transfer properties of plastics they insulate better and dont transfer the heat as quickly. Because of these properties, the Consumer Product Safety Commission (CPSC) recommends plastic slides and plastic surfaces over bare metal.
Installation: You will need twelve 1 ½ long 3/8 lag bolts and twelve 1 ½ #12 Wood Screws which are included for each set of rocks. Determine difficulty and height wanted. For one set of rocks, use 1 plywood, for taller set, use thicker plywood. Plan configuration wanted for rocks. Place rock on board and mark with pencil where holes need to be drilled. Drill a pilot hole for 3/8 lag bolt for large hole and #12 for small hole for each rock. Then using a 9/16 socket, screw 3/8 lag bolt into rock. Do not tighten until second bolt is installed. Using a 5/16 socket, screw in the #12 wood screw. Tighten both screws. Continue procedure until all twenty-four bolts are screwed in completely. Make sure no sharp point protrudes beyond back of plywood.