I have two Ken's grab hooks inline with FEL cylinders and one of Ken's clevis hooks in the center mounting a slip hook.
Ken's material, welds and priming are first class.
The bolts, flat washers, lock washers and fine thread nuts Ken supplies are Grade 8; the best. With the fine thread bolts/nuts one can tighten down the assembly smoothly "feeling" how much torque is being applied.
I have been using the hooks in forestry work for a year. The orange paint I applied is chipped. The gray primer, hook shapes and hook positions are as the day hooks were installed. QUALITY PRODUCT.