The bookshelf pegs for shelves adopts one-piece self-tapping screw design which can it grabs the board firmly and effectively keep the frame stable, very easy to installed or removed Shelf peg pin diameter Φ7.5mm. Pegs pin length: 12mm. Total length 25mm, self-tapping thread diameter 4mm. (Note: Please keep these small parts away from child, and Please make sure the hole size before purchase) made of high-quality Material, it is firm and , not easy to fracture, the -plated is rust proof, wear-, Ø7.5mm thickened material provides strong load-bearing capacity, 4pcs cupboard shelf support pegs can withstand weights of up to 20 kilograms / 44 LB 84 PCS plated shelf holders pegs and 84 PCS transparent anti-slip sleeves which protects the shelves from scratched or slipped and made less noise. (The silver shelf pins & anti-slip covers are packed separately in this set to prevent the pins from falling and hurting you) The cabinet shelf support pegs can be widely applied to most furniture in the home.The shelf support pins especially for cabinet, bookshelf, display cabinet, furniture, kitchen, wine cabinet, wardrobe, closet, bookcase and pantry shelving, Weight: 1.10892517786 pounds, Manufacturer: Prterver