These Trimming Knife Blades 100 Heavy Duty are replacement blades for utility and trimming knives, designed for cutting dense materials such as carpet, vinyl, rubber, roofing felt and heavy-duty packaging. Their primary use is in trades where a durable, long‑lasting cutting edge is required for repetitive trimming and profiling tasks, for example in flooring, roofing, automotive trim and industrial gasket manufacture.

The blades are manufactured from SK5 high carbon tool steel, heat treated to produce a hard edge for improved wear resistance and edge retention. The finished blades carry a phosphate/black oxide coating to give a degree of corrosion resistance and reduced friction when cutting. Blade dimensions are nominally 100 mm in length to suit Draper Group D style handles; thread, head and drive types are not applicable to this product. The blades are produced under ISO 9001 quality management and manufactured to recognised BS/DIN industry tolerances for hand tool accessories.

In typical applications these heavy duty blades are used to cut through thick underlay, rubber seals, carpet backing, vinyl sheeting, insulation and multi‑layer packaging. Flooring contractors and tilers use them for trimming vinyl and carpet edges, roofers for cutting felt and membranes, and bodyshops and upholsterers for precision trimming of foam and fabric. The hardness of the SK5 steel gives consistent performance in high‑use environments where a standard utility blade would blunt quickly.

Key benefits of these Trimming Knife Blades 100 Heavy Duty include improved edge life thanks to the hardened high‑carbon steel, easier cutting with the low‑friction black oxide finish, and compatibility with Draper Group D style knife handles for quick blade changes. The phosphate coating provides basic corrosion protection for storage and use in damp conditions.

Duchy Fasteners stocks these blades in 100 mm length and supplies them in a range of pack sizes to suit trades and workshops — small retail packs through to bulk packs for trade use. Contact us for current stock availability and pack options.