Product DescriptionSly barrel back set Angel thread
Diamond cut 6061 T6 Aircraft-Grade Aluminum Back Adapter Set, engineered to complement the patented SLY Dual-Carbon Classic Barrel Tip.
Ultra-premium grade aluminum for the utmost in accuracy and compression factor
Compatible with SLY Dual-Carbon CLASSIC Series Tips
Includes bore sizes .683,.686,.689,.692
Scratch resistant dust anodizing
Mix & Match: All 2 Piece Classic Series barrel systems are sold as separate fronts and backs. This versatile configuration allows the consumer to mix & match fronts with backs that fit various style marker threads