Clawlock® SL 275 VOC Primer/Undercoater is a Post-Catalyzed HAP’s compliant, two component (amino-alkyd) formulation. Clawlock® SL 275 Primer was developed for interior wood surfaces. Clawlock® SL 275 Primer is easy sanding and provides an excellent base coat for the start of a high performance 275g/l VOC pigmented finishing system.