[Valve Spring Compressor Tool] Made from heavy duty 3/16 thick steel plate and B7 grade hardware for strong durability. [Easy to Install]: When installing the screws, using lubricant can achieve better results. Make sure to maintain air pressure in the cylinder! Please take protective measures and always use goggles and . [Note]: Valve spring compressor tool must be available to replace valve springs or seals. Compatible: for LS1 LS3 LS6 LQ4 LQ9 LY5 LY6 LM7 L99 L76 L92, LSX 4.8L, 5.3L, 5.7L, 6.0L and 6.2L engines. Material: Steel Color: Black+Silver Package Contents: 1 x Compression Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.