MARSHALLTOWN Plastic Line Blocks and Twigs 16508 Clearance ASTM F2413-11 certified electric hazard

ASTM F2413-11 certified electric hazard protection (18 kV / 60 Hz / 1 minute)

comfortable 100% polyester

Easily zip off the sleeves or hood to suit your needs

along with a patented nylon end cap for added durability

3M is a pioneer in developing the science behind retroreflection and has been advancing the technology for over 70 years

MARSHALLTOWN Plastic Line Blocks and Twigs 16508 Clearance ASTM F2413-11 certified electric hazardBright yellow plastic is highly visible and impervious to water Included are plastic line twigs Twigs are used to keep the mason's line from sagging between the blocks Shrink wrapped with two pairs of blocks and two sets of twigs Block size is 5 X 2 1 4 2 pair line blocks and 4 twigs set