JConcepts brand Battery Hold Down Thumb Nuts from JConcepts. FEATURES: For use with the Associated B4.1, T4.1, B44.1, SC10 vehicles when the JConcepts Monroe battery brace is used Aluminum construction, blue in color with JConcepts logo in white YOU WILL RECEIVE: Four Battery Hold Down Thumb Nuts jxs 10/24/12 ir/jxs