Professional black cement putty for durable waterproof sealing of lead came and stained glass projects High-purity 1LB whiting powder to effectively absorb excess oils for a flawless streak-free finish Large 7-1/4" x 2-1/4" cement brush with 1" trim for efficient coverage and deep channel cleaning Complete your stained glass projects with the Sun and Moon professional finishing kit; featuring grey cement putty for a waterproof seal and 1LB of high-purity whiting powder to remove excess oils. This essential set includes a heavy-duty large brush; providing everything you need for cleaning, cementing, and polishing your lead came work to a studio-quality standard.