12 Pack Graded Card Slab with PSA Slab Bumper, Hard TPU PSA Slab Protector Gu… by | Jun 27, 2026Ergonomic matte finish slab bumper is designed to lock in place firmly enough, and easy to grip. Date First Available: October 19, 2025. Manufacturer Part Number: 12. Color: 12 Pcs Black.