- PACKAGE CONTENTS: This comprehensive set includes five hole saws in various sizes: Φ30mm (1.18''), Φ40mm (1.57''), Φ68mm (2.68''), Φ82mm (3.23''), and Φ100mm (3.94''). It also comes with two SDS connecting rods (SDS PLUS 300mm/11.81'' and SDS MAX 300mm/11.81'') and two pilot drill bits (110mm/4.33''). - MATERIAL: Constructed from high-quality tungsten steel and YG8 carbide, these hole saws are wear-resistant and built for durability, ensuring long-lasting performance. - VERSATILITY: This kit is ideal for a variety of materials, including brick, concrete, cement, stone, tiles, mixed brick walls, and foam walls. It is compatible with all rotary hammer drills featuring SDS PLUS or SDS MAX holders, making it suitable for brands like Bosch, Makita, Hilti, Einhell, Kress, Milwaukee, and Dewalt. - CARRY CASE: The set is supplied in a lightweight, portable plastic case that allows for easy transport and organized storage. Each component is securely fixed in its designated slot within the case, preventing damage and loss. - USE SCENARIOS: 1. Ideal for construction professionals who need to drill precise holes in walls for electrical or plumbing installations. 2. Perfect for DIY enthusiasts looking to enhance their home projects, such as installing fixtures or creating openings for ventilation. This hole saw kit combines quality, versatility, and convenience, making it an essential tool for both professional and personal use.