Simpson Hidden Timber Connector Kit with Screws ETB90A-SCRB CSD/DSD Split-Drive Anchors What materials can these bits

What materials can these bits drill through

That smaller footprint means the head is far less visible once driven

providing a continuously variable spindle speed range of 60 to 4

Cutterhead Speed: 5

Simpson Hidden Timber Connector Kit with Screws ETB90A-SCRB CSD/DSD Split-Drive Anchors What materials can these bitsThe Simpson Hidden Timber Connector Kit (ETB90A SCRB) delivers a clean, professional beam connection with absolutely no visible hardware. Engineered for structural integrity, this system uses interlocking plates fastened to each member that lock together to form a secure, load tested beam connection keeping the aesthetics of exposed timber framing intact without sacrificing performance. Key Features Completely hidden connection no visible hardware