The Hillman Group 560910 10X2-1/2 TAP-N-Seal Product Description Features Head Type: Hex Head Drive Type: Hex Drive Product Type: Screws With Washers Material Type: Steel Callout Size: 1 Length: 2-1/2 in. Container Size: 75 per box Self Drilling: Yes Color: Silver Point Type: Sharp Thread Type: Coarse Self Tapping: No Indoor and Outdoor: Indoor Application: Used in Wood, Fiberglass and Metal and They Possess a Drill Point Enabling it to Drill in its own Hole in Thin Gauge Steel Finish: Zinc . From the Manufacturer These self-drilling screws are used in wood, fiberglass and metal, and they possess a drill point enabling it to drill in its own hole in thin gauge steel. The sharp threads create their own mating thread when drilled into the material. No pre-drilled pilot holes necessary. Features Features Head Type: Hex Head Drive Type: Hex Drive Product Type: Screws With Washers Material Type: Steel Callout Size: 1 Length: 2-1/2 In. Container Size: 75 Per Box Self Drilling: Yes Color: Silver Point Type: Sharp Thread Type: Coarse Self Tapping: No Indoor And Outdoor: Indoor Application: Used In Wood, Fiberglass And Metal And They Possess A Drill Point Enabling It To Drill In Its Own Hole In Thin Gauge Steel Finish: Zinc Country Of Origin: Taiwan, Province Of China From The Brand Name: The Hillman Group Model Number: 560910 USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.