Haglof 3-thread Complete Increment Borers | .169" or .200" Diameter Haglof $218.00 Haglof 3-thread Complete Increment Borers | .169" or .200" Diameter Use this Haglof complete increment borer for extracting wood core samples from lumber, trees, wood poles and more. This 3-thread Haglof complete Increment Borer is available with... Choose Options