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The RED DEVIL 4101 is a stiff-blade putty knife designed for scraping, spreading, and applying compounds in residential and light commercial maintenance work. The 1-1/4-inch blade width makes it well suited for narrow joints, window glazing, and detail work where a wider knife would be impractical. The stiff blade construction provides the rigidity needed to remove old caulk, dried putty, and surface debris without flexing under pressure. Plumbers, HVAC technicians, and general maintenance trades keep this size on hand for prep and finishing tasks during service calls.
This putty knife is used across a wide range of trade applications including window re-glazing, caulk removal, patching compound application, and surface prep prior to sealing or coating. Its compact 1-1/4-inch blade width makes it a practical tool for tight spaces and trim work. The stiff blade is particularly effective when working with thicker compounds that require firm, controlled pressure during application or removal.
Designed as a general-purpose stiff putty knife suitable for use with standard glazing compounds, patching materials, and caulks common to HVAC, plumbing, and building maintenance applications.
This tool requires no installation. When using a putty knife for surface prep or compound removal near live electrical panels, energized equipment, or gas line connections, de-energize or shut off the relevant system before beginning work per applicable NEC or IFGC guidelines. Keep the blade clean between uses to prevent cross-contamination of compounds. Dispose of or replace blades that show signs of bending, corrosion, or edge damage that could compromise control.
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