Hex Washer Zip-In Screw (1000pg) - Malco factory-set to open at 300

factory-set to open at 300 PSIG

Quick-Change Mechanism: It has a 1/4-inch power insert shank

which features larger inlet and outlet sizes for higher flow capacity

sharp square cuts

This brush is ideal for cleaning flues and boilers where deposits are medium

Hex Washer Zip-In Screw (1000pg) - Malco factory-set to open at 300The Malco HW7X1 2ZT is a #7 x 1 2" Hex Washer Zip In Screw, packaged in a 1000 count tub. Here's a detailed overview: Product Details: HW7X1 2ZT Screw Size: #7 Length: 1 2 inch Head Style: 1 4" Slotted Hex Washer Head Finish: Bright Zinc Plated Drive Type: Slotted Hex Point Type: Ultra sharp tapered self piercing point Thread Design: Combination lead double thread Material: Steel Packaging: 1000 screws per tub