This adjustable carpet knife allows for a controlled cutting depth. An angled handle allows the user to reach difficult areas. 10-Blades can be stored in the handle for convenience. Retractable blade for controlling depth of cut 6-1/2 in. handle length Angled handle design provides easy access to hard-to-reach places Stores 10 regular duty .015 in. blades Compatible with regular (10-525) and heavy-duty (11-530) carpet blades Durable construction Easy to use