WH10 951P Passive Welding Helmet, SH10, Black, 951P, 4 1 2 in W, 5 1 4 in L no checkout Evolution standard geometry is sufficient Evolution standard geometry is sufficient for most drilling applications Manufactured specifically to maximize hole accuracy while minimizing cutter vibration and extending annular cutter life Using this standard geometry enhances accuracy and saves time This allows for a single ejection of slugs when drilling through stacked material Oversized ratchet with soft rubber grip allows for easy adjustment when wearing gloves Removable comfort cradle is a pivoting head pad that conforms to any head for the highest degree of comfort 3 position slider adjusts distance of the lens from your eyes for precise vision Crown strap adjustment allows the headgear to be raised or lowered for maximum comfort and performance Sweatband helps absorb perspiration and prevents sweat from interfering with vision Lightweight washable thermoplastic shell ADF adaptable (AV1005VXL only)