Picture hooks with nails made from zinc plated alloy metal; Durable, strong, and sturdy picture hanging hooks; Picture hanger system to mount mirrors, artwork, canvas art, photos, plaques, signs, clocks, paintings, wreaths, brooms, or frames; Can be used individually or together; Easy to install on wood, sheetrock, or plaster walls; Easy to remove with minimal drywall damage; Compatible with picture hanging wire and d-rings; Suited for galleries, frame shops, art projects, interior design, and residential uses; Picture hanging hardware in bulk wholesale packaging; Quantity: 100 sets; Size: Small: 0.8 X 0.16 (W) X 0.3"(D); Hold up to 20 pounds; Medium: 1 X 0.2(W) X 0.3" (D); Hold up to 30 pounds; Large: 1.5 X 0.25(W) X 0.3:(D); Hold up to 50 lbs; Extra Large: 1.7 X 0.35(W) X 0.5"(D) Hold up to 100 lbs; WARRANTY: 45 days no questions asked; Mandala Crafts, a trademark solely owned by Mandala Trading Inc., is the only distributor of Mandala Crafts., Weight: 0.2 pounds, Manufacturer: Mandala Crafts