Irwin STRAIT-LINE® marking chalks have a newly engineered flip-top cap that keeps the chalk in the bottle where you want it and stops it from spilling out in areas that you don't. The flip-top cap, available on all Irwin STRAIT-LINE® chalk bottles, seals the chalk in an air-tight chamber, keeping out moisture and reducing the risk of clumping.

• V-jaws give you more points of contact on round stock and tubing
• Reduce wear and tear on the battery while you work with Batteryguard™, a shock-absorbing battery to tool connection
• Stamped and ink filled diameter markings for wear-resistance

• https://assets.unilogcorp.com/187/ITEM/DOC/Irwin_100002663_Catalog.pdf Catalog
• https://assets.unilogcorp.com/187/ITEM/DOC/IRWIN_100002663_SDS.pdf SDS
• https://assets.unilogcorp.com/187/ITEM/DOC/Irwin_100002663_SDS.pdf SDS