Features: Durable The hole gauge is made of high quality stainless steel material, which is wear resistant, tough, hard, anti-rust and durable, owning long using life span. Professional One package includes four hole gauges with different sizes, which is professional and can suffice the different needs in practical situation. Adjustable The ball head of the hole gauge can be freely adjusted to test the accurate hole diameter data, which is convenient to adjusted by rotating the tail buckle. Anti-slipping handle The hole gauge with the anti-slipping handle can effectively prevent the slipping problem. Scope of application The hole gauge is designed for hole diameter measurement, which is widely suitable for wood working, construction, home DIY, furniture making and so on. Specification: Type: hole gauge Quantity: 4pcs Material: stainless steel Color: silver Length: A 7.6cm/ 2.99inch B 7.9cm/ 3.1inch C 8.8cm/ 3.46inch D 9.2cm/ 3.62inch Ball head diameter: A - 0.3cm/ 0.12inch B 0.5cm/ 0.2inch C 0.75cm/ 0.29inch D 1cm/ 0.39inch Pole diameter: 0.5cm/ 0.2inch Net weight: 100g/ 3.53oz Package: 4* hole gauge 1* package box