pair of 3-12 siz 4-1/4"x2" Auto Darkening Welding Lens Filter Shade Fixed 12

Description

this auction has 2 filters
new  4-1/4" x 2" Auto Darkening Welding Lens Filter 3/12
Specification:
Switching Time: 1/5000 s
in full conformity with CE and ANSI Z87 standards
Solar Powered with Rechargeable Backup Battery
Unit size  4-1/4" x 2"
Light State DIN# 3    /    Dark State DIN# 12
it is total hand free to change shade