Midwest Fastener SaberDrive Lag Screws Tan 5/16" x 3-1/2" Size:5/16" x 3-1/2" Unique screw tabs allow ring

Unique screw tabs allow ring to be securely attached to eigher a wooden or concrete sub-floor

The Insta-TEST® 4 Plus strip is ideal for spa owners who need the most critical tests for perfect water balance

Flexible in Temperature Range (-58°F up to +221°F)

Toggle lock positioned on top of the tape doesn't require sliding to lockReinforced quad-rivet end hook prevents end hook from ripping off of bladeErgonomic case design for better fit in-hand during measuring

Supports the end of 2 rails while not interfering with flat mounting surface of rail

Midwest Fastener SaberDrive Lag Screws Tan 5/16" x 3-1/2" Size:5/16" x 3-1/2" Unique screw tabs allow ring