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Malco SD40 4 in. Double Siding Gauge
Use it as a scribe or square to mark or score precise lines
Go straight to cutting with your utility knife
How To: Step 1 - Scribe It, Step 2 - Square It, Step 3 - Cut It
Works quickly and accurately, replacing chalk lines
Save up to 3 profitable hours on each job with the innovative Sider
4" Double Siding Template, Sider Marking, For Double 4" Vinyl Siding, Used For Easy Marking & Cutting Of Vinyl Siding, It Works Quickly & Accurately, Replacing Chalk Lines, Squares & Straight Edges, Use As A Scribe Or Square To Mark Or Score Precisely Marked 1/8" Holes.