The do-it-all fastener with 3,000 lb of shear strength that will install 10 times faster than lags and doesn't require pre-drilling. No more sledge hammers or damaged wood. Timberlok? will countersink into the beam; draws down warped beams; is removable; has 2" of thread with 1/4" major dia.; has unmatched corrosion resistance. Drive the Timberlok? in using a standard 1/2" power drill (a 5/16" driver bit is included.) Engineered for landscaping, post and beam work, retaining walls, c