Description: Material: Made from high temperature hardened carbon steel screws, durable, dependable, rigid strength and anti rust. Not Easy To Loosen: The top part that is inside the wood and holes is not threaded, so the skateboard bolts can fit snugly and have less vibration. Which keeps the deck mounting screws nuts from loosening and makes the skateboard deck bolts and the board last longer. Size: Different length screw sets available 27mm, 29mm, 31mm, 35mm, 40mm to meet your needs, please ensure that is the proper length you need when ordering. Widely Used: Used for Longboards, Skateboards, Cruisers, Trombones, etc. What You Get: You will get 8pcs screws, 8pcs nuts, 1pc L shape Wrench. Specifications: Color: Black Material: High-carbon Steel Size: 27mm, 29mm, 31mm, 35mm, 40mm 27mm: About 27mm/1.06inch(L) 29mm: About 29mm/1.14inch(L) 31mm: About 31mm/1.22inch(L) 35mm: About 35mm/1.37inch(L) 40mm: About 40mm/1.57inch(L) Wrench: About 80x20mm/3.15x0.78inch(LxW) Quantity: 1Pc* Skateboard Deck Bolt(include 8Pcs* Screws, 8Pcs* Nuts, 1Pc* L shape Wrench) Package Includes: 1Pc* Skateboard Deck Bolt Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.