The heads use a Torx drive system

220 x 10 Strong-Drive® SDWS TIMBER Screw is an interior-grade electrocoated fastener featuring a T40 6-Lobe design for enhanced torque and pullout

7 x 1 1/4 Simpson Trim-Head Wood Decking Screws - Square Drive 305 SS - 1 lbs Pack (256)

1 1/8-7 x 3 Grade 8 Hex Cap Screw Plain Domestic USA (6)

Simpson ETBS Wire Hole-Cleaning Brush Extension - Useable Length 8 1/2" (for use with ETBS-TH T-Handle) 1 1/2-6 Socket Cap Screws Alloy The heads use a TorxSimpson's ETBS 8 1 2" extension brush is designed for use with the ETBS TH T Handle to provide deep cleaning to hard to reach places. Its durable, corrosion resistant wire bristles make it ideal for removing scale, rust, and other debris.