Thomas No. 1178X39 Brush, Burette, Fitted on stainless steel wire handle. Nylon, on stainless steel wire handle, for burette cap. 50ml, head dia 19mm, length 760mm, weight 30 g Thomas No. 1178X40 Brush, Burette, Fitted on stainless steel wire handle. Nylon, on stainless steel wire…