The ridges provide more stable surface areas for the staple to reinforce the corner

Can be easily carried with one hand

roof drains

BENDABLE WAND 18" 1/4MPT I/O (BLack) 2250 PSI

Graco 124769 FITTING, ELBOW, MALE, 1 JIC X 1 SAE 1-1/2 HP The ridges provide more stableSpecifications UPC Product: 00633955602182 Family Code: MISC Country of Origin: US Unit of Measure: EA Height: 1. 55 IN 3. 937 CM Length: 3. 25 IN 8. 255 CM Width: 1. 85 IN 4. 699 CM Volume: . 005 FT3 0. 000 M3 Shipping Weight: . 61 LBS 0. 277 KG Technical Specifications Connection Type Threaded Size A (in) 1 Size A (mm) 25. 4 Size B (in) 1 Size B (mm) 25. 4 Thread Type JIC, SAE Type Elbow Thread Gender Male