CueStix International Exotic Wood Joint Protectors Set 3 Pin sizes available: 3/8x10, 5/16x14 and 5/16x18 3 Pin sizes available: 3/8x10, 5/16x14 and 5/16x18 3 Pin sizes available: 3/8x10, 5/16x14 and 5/16x18 3 Pin sizes available: 3/8x10, 5/16x14 and 5/16x18 3 Pin sizes available: 3/8x10, 5/16x14 and 5/16x18