Features. Our products are assured for reliability and durability which has high quality and standard. Our products are designed with the up to date designs and creativity. No 8 wire diameter. J1 stainless and Power Point self drilling tip. No 1 Square drive and self countersinking smaller smooth trim head for Trimtite. Pack of 40Specifications. Callout Size No 8. Length 3 in. Drive Style Square. Head Type Trim. Head Material Stainless Steel. Container Size 75 oz. Indoor or Outdoor Indoor and Outdoor. Self Drilling Yes. Thread Type Coarse Tech 7 Trimtite stainless steel for trim carpentry. Country of Origin Japan. Weight 42 lbs