This 20 blade razor lets you shave large areas of body hair quickly, and in hard to reach places like your back and shoulders. A unique time saving unisex grooming device for the 21st century. The 20 blade razor is comprised of one handle, four blade attachments, and four razor blades (not supplied). The blade attachments connect with the handle using the pentagon shaped coupling, guaranteeing a tight, straight fit. The razor blade units then dock with the attachment. After docking all four blades, thread a short piece of PLA/ABS filament into the hole in the top of the blade attachment. Cut the filament to length so that it holds the blade outwards on its hinges. This will provide the shock absorption and tension for the blade to provide a smooth shave. The blade attachment was reverse engineered from an official Gillette Fusion razor. This was done completely by measurement only, and is a perfect fit, but only when printed at high resolution. Handle Medium quality print. Blade Attachments High quality print.