Stainless Steel Snap Hook with swivel snap is recommended for 5/16 in. halyard. Eye opening is 1/2 in. and length is 3-1/2 in.
Stainless Steel Carabiner Fast Clasp Clip M4/M5 – Metal Field Shop
Carabiner Clip / Snap Hook
Sea Dog Line Snap Hook - Toothless Key-Lock – Ship to Shore Marine
National Hardware N100-359- 3-1/8-in Interlocking Spring Snap in
Snap Hook with fixed eye, Precision Cast. Suitable for marine use, diving equipment & other harsh conditions.
Stainless steel Snap hook 51 mm with fixed eye
dimok Heavy Duty Carabiner Clips Stainless Steel Spring Snap Hook
Spring Snap Hook 50mm overall length
Carabiner Snap Hook - Attach Custom Flags & Banners to Hardware
Open Throat Snap Hook, made with stainless steel, moves easily for different applications. DO NOT USE TO ATTACH ANCHOR LINE EYELET TO ANCHOR LEAD ARM
Snap Hook Heavy Duty Carabiner — Slide Anchor