BROWNELLS “IN-HOLE" KITS The Brownells “In-Hole” Kits provide a versatile assortment of precision coil springs designed for firearm repairs, custom builds, and general gunsmithing applications where springs must operate inside confined holes and recesses. Constructed from high-tensile spring wire and wound with controlled tension, these springs are engineered to compress smoothly while helping reduce binding for reliable operation. Available in both light-duty and heavy-duty configurations, each kit includes a selection of spring sizes designed to function freely inside holes ranging from 3/32" (2.4mm) to 1/4" (6.4mm) diameter. These spring assortments are ideal for replacing worn springs, fabricating custom components, and maintaining a ready supply of commonly used spring sizes on the gunsmithing bench. FEATURES Construction: High-Tensile Spring Wire Design: Controlled-Tension Coil Springs Purpose: For Applications Requiring Springs to Operate Inside Restricted Areas Performance: Smooth Compression with Reduced Binding Application: Firearm Repair, Restoration, and Custom Gunsmithing Configuration: Available in Light-Duty and Heavy-Duty Versions Spring Assortment: 6 Different Sizes Per Kit Length: 12" (30.5cm) Springs for Custom Fitting SPECIFICATIONS Material: High-Tensile Spring Wire Spring Length: 12" (30.5cm) Hole Size Compatibility: 3/32" (2.4mm) to 1/4" (6.4mm) Spring Quantity: 12 Springs Per Kit Available Models: Kit #1 ID-12 Light Duty, Kit #2 ID-12 Heavy Duty Made in USA INCLUDES IN KITS Kit #1 ID-12 Light Duty Total Springs: 12 Number of Sizes: 6 Configuration: Light Duty Length Per Spring: 12" (30.5cm) Kit #2 ID-12 Heavy Duty Total Springs: 12 Number of Sizes: 6 Configuration: Heavy Duty Length Per Spring: 12" (30.5cm) The Brownells “In-Hole” Kits are a practical addition to any gunsmithing bench, providing a convenient assortment of precision coil springs for repair and custom firearm applications. With multiple spring sizes, high-quality construction, and both light-duty and heavy-duty options, these kits help ensure you have the right spring on hand when a project demands it.
"In-Hole" Kit #2 ID-12