The inoculation holder is made of bakelite handle and plated brass rod,the inoculating loop is made of durable nichrome,can be manageable while being long enough to dissipate lots of heat,and good for hours of back-to-back platinge Heat the loop until it glows then let it cool for about thirty seconds touching your .'t autoclave the bakelite handle,it can always be disinfected with ethanol The grip portion of the handle is pliable and soft,highly durable and solid product without being overly heavy and a chore to use Vacuum- plasma surface treated, allowing liquid or solid medium to attach.These inoculating are for transferring to and from tube cultures in the lab,they are tools in inoculating experiment. Colour: Black+Silver Material: Metal Package Contents: 2 x 8.8inch(22cm) inoculation rods 50 x 10ul inoculating tips(3mm diameter wire loop and 65mm long) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.