Minimize flexing and vibration when standing on minute crystals and fingernail flakes with these stout hooks. Ed Leeper made these industry standard hooks for decades and now our friend Theron has taken over the production - with attention to every minute detail. POINTED AID HOOKS (also known as Logan Hooks - after Jim Logan - the designer) can be used as bat hook in drilled placements or on "dead heads", WIDE HOOKS are stable and strong for edges and micro ledges.