The RYOBI 2-in-1 Hobby Knife w/ Blade Storage is compatible with most Hobby Blades thanks to the 2-in-1 Design. With a No-slip Collet and On-Board storage, this knife keeps blades secure and organized. An Ergonomic Handle is Designed for Comfort and Control. The included #11 and #2 precision blades provide accurate cuts while the protective cap keeps you safe on the go. Included is (1) 2-in-1 Hobby Knife w/ Blade Storage, (2) #2 Blades, (3) #11 Blades with Storage and Protective Cap.