FISCHER GKM DRYWALL ANCHOR METAL 100 pcs. DescriptionAdvantages · Sharp, self-drilling thread allows for dimensionally stable installation. · Pre-drilling is only necessary when used in double plasterboard. · No special setting tools are required; a standard Phillips bit is sufficient. · Due to the short length of the anchor, little space is needed behind the board. · When used in gypsum fiberboard, pre-drilling with an 8 mm drill bit is required. · Article 00040432 Comes complete with chipboard screw (pan head) with PZ2 drive. · Article 00040434 Comes complete with chipboard screw (countersunk head) with PZ2 drive. Technical dataanchor length 31 mmmin. thickness to first load-bearing layer 3535 mmdrive screw size 4.5 - 5.0 x Ls mmmax. usable length