GC Gradia Core Intro Package. Gradia Core is a one-step, self-etching bonding system and easy mixing system. The components have an optimal consistency, long (over 3 minutes) working time and rapid dual-cure. One product can be used for cementing the post and building up the core. Easy-to-read radiographs. Has cutting characteristics similar to dentin. Intro Kit contains 10ml/20g cartridge, 3ml Self-Etching Adhesive A, 1.5ml Self-Etching Adhesive B, 20pcs Automix mixing tips, 20pcs Endo extension tips, Dappen dish, microtip-holder and 25pcs micro tips.