50 Mounts per Order Minimum. Product ships complete in one Case. The QB1 Kit with Dual Flashing is an easy way to mount Solar to a variety of roofs. SEALANT NOT REQUIRED. Leak Proof-Water Test Results. ASTM E331 @ 15.00 PSF No Leakage. ASTM E331 (modified), 120 min @ 30.00 PSF No Leakage. ASTM E2140 (modified), 6" water column for 7 days No Leakage. To compress properly with QB1 requires 150 Minimum Torque Lbs/Inch. The 10MM x 46MM rail slot accepts 5/16" or 3/8" bolts. Compatible with Rail and Most Rail-less Systems Including Snap N Rack, Unirac, IronRidge and Eco Fasten. Simply Drill, seal, and mount! Patent #8448407