This is rare, and most other filling blades on the market either offer flexibility or rust-resistance - not both. The slim aluminium top is designed so that it does not get in the way, allowing the blades to fit comfortably in the hand. For filling and quickly smoothing cracks, gaps and holes this set of 4 filling blades includes a handy 25mm size. Ultra flexible. Stainless steel (anti-rust) blade & slim aluminium handle. Set consists of: 25mm Axus Flexible Filling Blade 50mm Axus Flexible Filling Blade 80mm Axus Flexible Filling Blade 100mm Axus Flexible Filling Blade