Measurement: The door hinge tool built-in multi-level depth gauge to easily suit hinges of different thicknesses (2.5"-5""), ensuring accurate cuts every time. The silicone anti-skid pads provide stability and preventing door damage during installation Wide Compatibility: This door hinge jig is suitable for cutting clean mortises (2.5" to 5" in length) for both round hinges (1/4", 5/8" radius) and square corner hinges (90° corners chisel required). Ideal for most door types. Kindly note: Only use on doors, not on door jambs Easy to Use: The door hole drilling kit are designed for the most common lock sizes. Package comes with a self-centering drill bit and a double-ended screwdriver bit for tool-free efficiency. No need tool, friendly for DIY user and professionals Upgraded Material: Made of precisely processed aluminum alloy material with anodized , it offers superior anti-deformation capability compared to ordinary plastic model fixtures. The sturdy and material ensures long-term stable use, maintaining precise positioning and cutting, making it an ideal partner for installing wooden doors Complete Kit Lists: Includes 1 x door hinge mortiser, 1 x router bit, 1 x self-centering hinge bit, 1 x double-ended screwdriver bit and, Manufacturer: Akfldms