Features: Adjustable hole cutter with 30-300mm diameter ranging for various wood and plasterboard applications, feature 45# steel handle and reinforced manganese blade for 50% long durability. Effortless one hand rotation mechanism enables rapid 10 second size adjustments without extra tool, ideal for precise driven tasks requiring quick configuration changes. Professional contractors and DIYer enthusiasts benefiting from ergonomic nonslip grip that reduce hand fatigue during extended woodworking or home renovations projects. Perfect for creating clean openings in plasterboard wall, cabinet installations, and craft projects where multiple hole size demand a single reliable manual hole cutter. Engineered with wear resistant manganese steel teeth that maintain sharpness through repeated use on dense materials, outperforming standard plasterboard hole cutter kit. Specifications: Componentl: Handle-45# Steel | Blade-reinforced manganese steel size: Silver: 30-120mm (165mm length) / 30-200mm (235mm length) / 30-300mm (330mm length) Black: 30-120mm (160mm length) / 30-200mm (230mm length) / 30-300mm (325mm length) Color:Silver/Black Technical parameters: effective processing depth 31mm, 30-300mm hole opening ranging; weight is silver 370.5g, 430.5g, 423g, 500g; Use scenario: suitable for carpentry, home decoration, equipment installation and DIY projects, and meet different needs with multiple functions. Package Includes: 1pcs Woodworking Hole Cutter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.