Samson Splicing Fid kits, has numerous sized fids to work splicing ropes.
Factor 55 Fast FID Rope Splicing Tool - NAPA Auto Parts
Braided Rope 9100 Splicing Kit
Large Splicing Kit - Engineered Rope
West Coast Paracord Rope Splicing Fids and Steel Pushers - Rope Working Tools for Marine, Home & Commercial Use - Easily Splice Polypropylene, Manila & Various other Rope Types - Walmart.com