Parallel Bar Knob At the end of each parallel straight edge are knobs that can be loosened to move the bar vertically and tighten before use. Rubber Grip The grips allow the board to hang over the edge of a table up to 8". Cable Guide Guides allow the cables to not get tangled and smoothly transition while adjusting the parallel bar. PXB21 PXB24 PXB26 PXB31 PXB36 PXB42 Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.2 out of 5 stars 110 4.2 out of 5 stars 110 4.2 out of 5 stars 110 4.2 out of 5 stars 110 4.2 out of 5 stars 110 4.2 out of 5 stars 110 Price $128.69$128.69 $147.49$147.49 $160.41$160.41 $183.60$183.60 $203.17$203.17 $219.98$219.98 Bar Type: strong aluminum inking edge clear bar strong aluminum inking edge clear bar strong aluminum inking edge clear bar strong aluminum inking edge clear bar strong aluminum inking edge clear bar strong aluminum inking edge clear bar Build Type: solid core drawing board / smooth Melamine solid core drawing board / smooth Melamine solid core drawing board / smooth Melamine solid core drawing board / smooth Melamine solid core drawing board / smooth Melamine solid core drawing board / smooth Melamine Color: White White White White White White Item Size: 16"x24" inches 18"x24" inches 20"x26" inches 23"x31" inches 24"x36" inches 31"x42" inches STB Drawing Board - 2331 STB Drawing Board - 2026 STB Drawing Board - 1824 Add to Cart Add to Cart Add to Cart Customer Reviews 3.5 out of 5 stars 31 3.6 out of 5 stars 21 3.5 out of 5 stars 38 Price $122.37$122.37 $97.29$97.29 $145.31$145.31 Bar Type: straight edge parallel bar with brakes and adjustables knobs straight edge parallel bar with brakes and adjustables knobs straight edge parallel bar with brakes and adjustables knobs Build Type: Solid core drawing board/melamine surface Solid core drawing board/melamine surface Solid core drawing board/melamine surface Color: White White White Item Size: 18"x24" inches 20"x26" inches 23"x31" inches Item Weigth: 9.83 pounds 11.62 pounds 13.82 pounds